Drying and gas or vapor contact with solids – Apparatus – With automatic control
Reexamination Certificate
2007-02-27
2007-02-27
Lu, Jiping (Department: 3749)
Drying and gas or vapor contact with solids
Apparatus
With automatic control
C034S586000, C034S093000, C034S181000
Reexamination Certificate
active
10525516
ABSTRACT:
A device for drying sludge originating in a waste water treatment plant is enclosed in a greenhouse having a floor for receiving a bed of sludge to be dried. The greenhouse employs solar energy. A spreader located in the greenhouse ensures the the sludge is spread over the floor and turned as it progresses along the drying device. Fans are positioned over the spreader to provide for the renewal of air present in said greenhouse. A controller controls start up and shut down of a drying cycle as well as automatic control of all motorized components in response to measurement of the temperature of the surface of the bed of sludge. The controller also takes into account the difference in temperature between the surface of the bed of sludge to be dried and the atmosphere present in the drying plant, equipment in the greenhouse only being started up when this temperature difference reaches a predetermined set point.
REFERENCES:
patent: 2279848 (1942-04-01), Unger
patent: 5065528 (1991-11-01), Kaneko et al.
patent: 684 771 (1994-12-01), None
patent: 24 06 213 (1975-11-01), None
patent: 43 15 321 (1994-11-01), None
patent: 198 36 268 (2000-02-01), None
patent: 1 150 083 (2001-10-01), None
patent: 2 309 814 (1976-11-01), None
patent: 2 637 968 (1990-04-01), None
patent: 57 153189 (1982-09-01), None
patent: 04 165287 (1992-06-01), None
patent: WO 01/06190 (2001-01-01), None
patent: WO 01/06191 (2001-01-01), None
Bux M. Et al., “Volume Reduction and Biological Stablisation of Sludge in Small Sewage Plants by Solar Drying,” Drying Technology, Marcel Dekker, New York, YS, vol. 20, No. 4/5, 2002, pp. 829-837.
Luboschik U., “Solre Schlammtrocknung Nach Dem Ist Verfahren.—Seit Drei Jahren Erprobung In Der Prasix.—Solar Sludge Druing Based on the Ist Process.—Process Three Years on Test in the Practice.—” At—Aufbereitungs Technik-Mineral Processing, at Verlag Fuer Aufbereitungs, Weisbaden, DE, vol. 39, No. 1, 1998, pp. 25-28.
Kolega Stiv
Luboschik Ulrich
Connolly Bove & Lodge & Hutz LLP
Degremont
Lu Jiping
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